Indian Institutes of Science Education and Research (IISER)
| Organization / University | Indian Institutes of Science Education and Research (IISER) |
|---|---|
| Exam / Course Name | IISER Aptitude Test (IAT) 2026 |
| Update Category | Answer Key & Objections |
| Status | ARCHIVED |
| Official Portal | https://www.iiseradmission.in/ |
The Indian Institutes of Science Education and Research (IISER) has published the provisional Answer Key along with the question paper and response sheets for IISER Aptitude Test (IAT) 2026 (All India). Candidates who appeared in the test can cross-check their marked responses with the official key to compute their estimated scores. In case of any discrepancies, candidates may submit online objections within the stipulated challenge window accompanied by prescribed proof. Detailed instructions and direct objection links are available below.
| Exam Date | 07 Jun 2026 |
|---|
The Indian Institutes of Science Education and Research (IISER) released the provisional answer key for the IISER Aptitude Test (IAT) 2026 on June 7, 2026. Candidates who appeared for the entrance examination held on the same day can access the answer key directly through the official admission portal to verify their responses and calculate their tentative scores.
| Event | Date |
|---|---|
| IAT 2026 Exam Date | 7 June 2026 |
| Provisional Answer Key Release | 7 June 2026 |
| Response Sheet Availability | 9 June 2026 |
| Objection Window Opens | 9 June 2026 |
| Objection Window Closes | 13 June 2026 |
| Final Answer Key (Tentative) | 4th Week of June 2026 |
Follow these instructions to download the official PDF from the portal:
Candidates can estimate their performance using the following marking criteria:
Calculation Formula: (Number of Correct Answers × 3) - (Number of Incorrect Answers × 1)
If a candidate identifies a discrepancy in the provisional answer key, an objection must be submitted through the official portal. This window is strictly open from 9 June 2026 to 13 June 2026. Objections must be supported by appropriate documentation. Please note that no challenges will be entertained after the deadline.
The student response sheet will be made available on the official portal starting 9 June 2026. You will need your login credentials to access your specific response data.
You must use the IAT 2026 Answer Key Objection Portal on the official website during the designated window (June 9–13) to submit a formal challenge with supporting evidence.
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